#include <iostream>
#include <vector>
#include <iterator>
#include <sstream>
#include <cmath>
#include <list>
#include <map>

int main() {
    std::map<std::string, double > map;
    std::vector<std::string> ordered;
    while (true) {

        std::string input;
        std::getline(std::cin, input);
        if (input == "stop") {
            break;
        }
        bool contains = false;
        for (int i = 0; i < ordered.size(); ++i) {
            if (ordered[i] == input) {
                contains = true;
            }
        }
        if (!contains) {
            ordered.push_back(input);
        }
        std::string numberToStr;
        std::getline(std::cin, numberToStr);
        double number = std::stod(numberToStr);
        bool isThere = false;
        for (std::pair<std::string, double> element : map) {
            if (element.first == input) {
                isThere = true;
                break;
            }
        }
        if (!isThere) {
            map.insert(std::pair<std::string, double>(input, number));
        } else {
            double currentNumber = map[input];
            double sum = number + currentNumber;
            map[input] = sum;
        }
    }
    for (int i = 0; i < ordered.size(); ++i) {
        std::string current = ordered[i];
        ordered.erase(ordered.begin());
        i--;

        std::cout.setf(std::ios::fixed);
        std::cout.precision(0);
        for (std::pair<std::string, double> element : map) {
            if (element.first == current) {
                std::cout << element.first << " -> " << element.second << std::endl;
            }
        }
    }
    return 0;
}